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Finding the Fourth Proportional to 469.10, 703.60 and 208.86

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Solution

The fourth proportional to 469.10, 703.60 and 208.86 is: 313.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.10 : 703.60 = 208.86 : x
  2. Step 2: Convert to fraction form
    469.10/703.60 = 208.86/x
  3. Step 3: Cross multiply
    469.10x = 703.60 × 208.86
  4. Step 4: Simplify right side
    469.10x = 146,954.16
  5. Step 5: Solve for x
    x = 146,954.16/469.10
  6. Step 6: Final answer
    x = 313.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.